There are many
instances where wire that is being used for powering lights can also be visually
attractive in a modeling environment. A couple of examples are shown below:

The N scale loading
dock above has a flood light mounted up in the roof that is powered by the
twisted black wires seen running through the insulators (drilled segments of
styrene rod) mounted to the main roof I-beam. The twisted wires were painted
black (Poly Scale acrylic) prior to threading them through the insulators. They
go through the junction box in the upper-left corner and outside this little
diorama to battery power inside a pill bottle the whole thing is mounted on. Many early-era shops and
buildings had exposed wires like this before modern building codes outlawed such
potentially dangerous wiring hazards.

Here we have an N scale
4-way intersection with flashing yield and stop lights hanging from a cable
suspended between two poles. The signal is 4 LEDs wired in series powered by two
#38 magnet wires. To give the overhead cable some appearance of realism we
twisted each of the two #38 wires along a segment of our
N2104 (0.004")
straightened stainless steel wire. The #38 wires are insulated copper and are
too soft to hold the shape of the "droop" that is so typical of cables between
poles. We used one of our twister tools to hold the two wires where they meet
the stainless steel wire, they hand wound each wire along the steel wire, forced
a droop between the poles and
glued them at each end. The poles are slotted down the outside
length (using our N4300 Saw) and the #38 wires are glued into the slots and the
poles painted. It's a tiny scene, but it gets a lot of comments at train shows.

Parts Holder

The possibilities here
are almost limitless. We've used them to hold parts for painting, threading wire
into tubing, holding gooseneck tubing while lampshade epoxy is drying, They can
be clamped in a bench vise or held by a clothespin and set aside for parts
curing or paint drying. The padded tips provide cushion but the spring in the
clip is strong enough to firmly hold parts. Shown below is a construction light
we built using two of our N1021 2x3mm white LEDs. The clip helped us hold the
tube during assembly, wiring and painting the LEDs.